In the process of the treatment of hard coal face of coal,use uncoupled deep-hole blasting technology so as to achieve the effect of loosing rock,not only reduce the consumption of shearer equipment fittings,but also improve the working efficiency.

With deep bore smooth surface exploding technique and the relevant scientific management system, shaped tunnel once for all, and further more studied carefully full rock tunnel excavating method with modern machinery, in order to boosting excavating speed and development of mechanical production line, finally paving the way for building hi-production and hi-proficiency team.

Deep-holed millisecond blasting is a fast construction method applied to large scale earthwork.

Through adopting the deep-hole and pre-shear blasting technology,the per unit yield of working face and extraction rate are raised,the problems of difficult caving of roof coal and low extraction rate caused by coal hard and inserting gangue at the fully mechanized face with caving of roof coal in the huge thick coal seam are solved.

The calculation of surface deep-hole blasting parameters of Paishanlou gold mine in Liaoning;

Discussion on the rock fragmentation of deep-hole blasting for Guishan quarry;

To lower blasted boulder yield is one of the most important technical considerations in deep-hole blasting operations of mine.